Slang dictionary
mufo
or MuFo [moo-foh]
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Mufo is short for mutual follower, referring to someone you follow on social media who follows you back.
But, it is sometimes an alternative form ofÌýmofo, a softening of the vulgar slangÌýmotherfucker.
Where does mufo come from?

The termÌýmufo clipsÌýand blends the expressionÌýmutual follower. The term mutual follower is seen by at least June 2007 on Twitter, where aÌýmutual follower is someone you follow on social media who follows you back (henceÌýmutual).
tried to tidy up Twitter and leave anyone who wasn't a mutual follower but Twitter doesn't seem to let me leave anyone!!!
— Tish Shute (@TishShute)
Because mutual follower is just apparently way too long for the internet, mutual follower was shortened to mufo by at least 2010.
Think I jus unfollowed all the regular mufo tht I THOUGHT was following me… hit up ya source to see what I'm lookn like
— Mr Young (@Grade_A_Dre)
Before the social mediaÌýmufo went mainstream, mufo was sometimes used as shorthand for motherfucker or motherfucking. It’s still used that way sometimes online, similar to mofo,Ìýpronounced [moh-foh] and which dates back to the 1960s.
So if I don't tweet… muFo's be unfollowing on the low…. 0_o
— DefinitionOfNice (@Dnice_757)
The expression mufo became more prevalent in 2016 on Twitter, perhaps in part to debates about the US presidential election that year that caused many people to unfollow social media friends.
lost my first (known) longtime-ish mufo today, so it begins. the great unfollowing
— kate (@garbagekate)
Examples of mufo
Who uses mufo?
The notion of mutual followers,ÌýAKAÌýmufos, is found on social media, especially Twitter and Instagram. People have a lot of love for theirÌýmufos, and it can be considered rude to unfollow or muteÌýthem.
Area Man Unmutes Mufo, Is Instantly Reminded of Reason for Mute
— bitteranagram (@bitteranagram)
It is less common to see mufo asÌýmotherfucker with the new spread ofÌýmutual followers, but it still sees use.
When I look in the mirror I see one amazing ass mufo guy.
— *IDontGiveaFUCK* (@DavidThat_Guy)
MUFON, sometimes written MUFO, is the acronym for the Mutual UFO Network, a nonprofit organization dedicated to the search for intelligent extraterrestrial life.
Mufo is not to be confused with muufo, a traditional Somali flat bread.
Note
This is not meant to be a formal definition of mufo like most terms we define on Dictionary.com, but is rather an informal word summary that hopefully touches upon the key aspects of the meaning and usage of mufo that will help our users expand their word mastery.